Schematics and Gerbers

While TRS-80 parts can be found on eBay, the sellers are often trying to capitalize on scarcity. For those who have the ability to build their own circuits, or to see if others can build them for them, there are some people out there who have been diligently reverse engineering this long discontinued hardware. The following is a list of hardware which has been redesigned to be superior to the original products, as well as contain parts which are easily sourced:

•  Aerocomp Doubler for the Model I

•  Bench 256K for the Model I

•  Expansion Interface Buffered Cable for the Model I

•  Grafix-80 for the Model I

•  LNWDoubler 3/5/8 for the Model I

•  NewClock-80 for the Model I

•  Omikron Mapper for the Model I

•  Percom Doubler II for the Model I

•  Percom Doubler for the Model I

•  Printer Interface for the Model I

•  RS-232 Rev A for the Model I

•  RS-232 Rev B for the Model I

•  Supermen 512K Expansion for the Model I

•  Western Digital 1002-5 Hard Drive Controller for the Model I

•  Graphics Kit 26-1125 for the Model III

•  Microlabs Grafyx 3.2 for the Model III

•  Microlabs Grafyx 4.2 for the Model 4

•  Orchestra-90 for the Model III and 4

•  NewClock-80 for the Model III and 4

•  Graphics Kit 26-1125 for the Model 4/4P

•  Microlabs Grafyx 5.1 for the Model 4/4P